Oil burner apparatus



March 15, 1938.

W. F. AUSTIN OIL BURNER APPARATUS Filed March 26, 1935 Fig.1

' 2 Sheets-Sheet) 1 1938. w. F. AUSTIN OIL BURNER APPARATUS March 15',

Filed March 26, 1935 2 Sheets-Sheet 2 'IHII Patented Mar. 15, 1938UNITED STAT ATENT OFlCE 2 Claims.

My invention relates to oil burner apparatus and it has for its objectto provide an improved burner apparatus of this class which will be ofsimple and efficient construction.

To these ends. I have provided an oil burner apparatus having thepeculiar features of con.- struction set forth in the followingdescription, the several novel features of the invention beingseparately pointed out and defined in the claims at the close thereof.

In the accompanying drawings:-

Figure 1 is a plan view, partly broken away, of an oil burnerapparatus'constructed in accordance with my invention.

Figure 2 is a section on line 22 of Fig. 1.

Figure 3 is a section on line 33 of Fig. 1.

Figure 4 is an end elevation of the delivery pipe of the apparatus shownin Figs. 1 and 3.

Figure 5 is a section on line 5-5 of Fig. 3.

The embodiment of my invention herein illustrated comprises a mainhousing or casing l constructed with three legs H by which it issupported from the floor in proximity to the fire-box of the furnacewith which it is associated. This casing provides a chamber I2 withinwhich is arranged a fan I3 that is fast on a horizontal shaft [4journaled in bearings provided on the casing at opposite sides ofchamber l2.

The shaft M is, as usual, connected at its one end with the armature ofan electric motor 15 by which it is driven in the direction of thearrow, Fig. 3, and at its opposite end with a gear pump !6 that isdriven by it.

The chamber l2 has near its. top a threaded outlet ll into which isscrewed the threaded end of a horizontal delivery pipe l8 whose oppositeend portion, as usual, is disposed within the firebox of the furnace.

Within delivery pipe l8, and near the outlet end thereof, is fixedafan-likebafile comprisingan apertured hub I9 and three radial vanes 2%whose outer ends snugly fit the interior of pipe Ill. The aperture ofhub I9 is occupied by a straight brasspipe section 21! which alsoextends through an aperture provided through the lower end of a bracketarm 22 which extends downwardly from the top wall of housing it. Thebaffle l9-20 and bracket arm 22 support the straight pipe section 2| sothat it is disposed centrally and longitudinally within. the deliverypipe is and adjacent to the delivery end of the pipe: l8 said pipesection 2| is equipped with a spray nozzle 23.

The end of pipe section 2| that is within chamber I2 is connected by acopper pipe 24 and oil pressure regulating valve 25 with the outlet ofthe gear pump [6, the inlet of the latter being connected through astrainer 26 and pipe 2'! with a supply of fuel oil.

Two of the vanes of the b aille i92ll are formed each with an aperturewithin which is mounted one of a pair of electrode fixtures 28 whoseelectrode terminals 29 are supported with their ends in proximity tonozzle 23 as shown in Figs. 3 and 4. Each electrode 29 is connected by ahigh voltage cable or insulated conductor 30 with the usual transformer3| mounted upon the exterior of casing Ill, said two cables extendingfrom fixtures 28 through pipe i8 and chamber l2 to the transformer, aswill be clear from Figs.

3, 4 and 5, and the side wall of chamber 92 to which the transformer isfastened being constructed with an outlet 32 for each cable throughwhich the latter extends from chamber l2 into transformer 3|. Thus thetwo high voltage cables 39 are entirely enclosed and shielded.

' The depending bracket arm 22 (Figs. 3 and 5) is made with a threadedaperture into which is screwed the threaded stem of a laterallyprojecting yoke-shaped hanger 33 by which the two cables are supportedin elevated positions above the fan wheel l3, said cables resting in theforked free end of the hanger as shown in Fig. 5 and being held orconfined therein against accidental displacement while the burner isbeing handled or transported by the adjacent portion of the top wall ofthe casing Ill.

Thisportion 34 of the casing is a removable panel occupying an openingor hand-hole 35 formed at the top of the body portion of the casing,Fig. l, and secured therein by two screws 35 and 31. The lower end ofpanel 3% rests upon a lug or shelf 38 formed with a threaded aperture toreceive the screw 36 while the upper end of said panel is made with anoff-set lug 39 formed with a longitudinal slot 4!] that is open at oneend.

The lug 39 overlies an adjacent portion of the body of the housing andits slot 40 is occupied by the screw 31 which extends downwardlytherefrom through a plain hole 4! formed through said adjacent portioninto a tapped hole provided in the upper end of the depending bracketarm 22 so as to hold both the latter and panel 3 5 fixedly in position.

Normally the bracket arm 22 and b aille l92il rigidly support the pipesection 2| and electrode fixtures 28 in their proper positions withinthe delivery pipe l8, but it will be clear that after removal of screws36 and 31 together with panel 34, and after disconnecting pipe 24, theoil delivery pipe 2! together with the parts Ill-20, 28, 29 and 22, maybe withdrawn through handhole 35 for adjustment, repair, cleaning, orother attention, the cables 30 being removed from hanger 33 during thisoperation. Thus operations of this nature may be effected withoutdisturbing the position of the casing I0 and delivery pipe 18.

One side wall of the body portion of the casing i0 is formed with an airinlet aperture 4'! in communication with the interior of a hollowcylindrical damper sleeve 46 rotatably mounted within a semi-cylindricalhood bracket 42 fastened to the apertured side wall of casing It) byscrews 42*. This hood bracket is made with an outer end wall providedwith two tapped holes within which are mounted two set screws whoseinner ends are opposite the outer edge of damper sleeve 46, againstwhich they are normally set uptight to hold the same against accidentalrotative displacement.

The sleeve 56 is made with a plurality of parallel circumferential airinlet ports 43 through which air is drawn from the outside atmosphereinto sleeve 45 and from the latter through port 41 into the fan chamber;

t will be clear that the effective areas or sizes of the ports 43 may bevaried by manual rotative adjustment of sleeve 45 within the hood 42while screws 45 are loose, and that the sleeve can be fixed in itsadjusted position by settingthe screws up tight. 7

By arranging the slots 43 circumferentially as shown the frictionalresistance opposing the movement of the air therethrough is reduced toless than what it would be with the slots 43 disposed parallel withtheaxis of shaft l4 so that the described construction tends to improve theefficiency of the burner.

It is a feature of the above described burner that the apertured arm 22is made of such length that when the screw 31 is tightened the bafllel920 is cramped or sprung sidewise within the outlet pipe l8 with theresult that the oil delivery pipe 2| and all of the parts immediatelyassociated therewith are fixed rigidly in position and cannot vibrate orrattle.-

What I claim is:

1. In an oil burner apparatus, a blower casing constructed with a fanchamber having a side wall made adjacent to its top with a laterallydirected air outlet and having a top wall made with a handhole; a fandisposed within the lower part of said chamber beneath said handhole apanel normally closing said handhole; means removably fastening saidpanel to said casing; ignition de vices mounted within said outlet withprovision for removal through said chamber and handhole, and saiddevices including a circuit cable extending through said chamber andinto said outlet, and means within said chamber for supporting saidcable above and out of engagement with said fan so that said panelnormally serves to prevent disengagement of said cable from saidsupporting means but so that said cable is freed from such confinementby removal of said panel.

2. In an oil burner apparatus, a blower casing constructed with a fanchamber having a side wall made adjacent to its top with a laterallydirected air outlet and having a top wall made with a handhole; a fandisposed within the lower part of said chamber beneath said handhole; apanel normally closing said handhole; means removably fastening saidpanel to said casing; a yoke-shaped bracket within said chamber for'supportingan electric'cable of the ignition devices of the apparatusabove and out of engagement with said fan so that said cable is normallyconfined within said yoke-shaped bracket by said panel but is freed fromsuch confinement by removal of the latter.

WENDELL F. AUSTIN.

